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Land Rover Defender OCTA
L663 110, 2025–

Factory gearing, tires, angles and brakes for the Defender OCTA, and what the usual upgrades do to it. Every number is from the maker's own figures unless the calculators say otherwise. A few figures here are still waiting on a factory document; the calculators mark them.

Use this truck in the calculators
119 in wheelbase · 33.5 in front · 44.5 in rear overhang
in
Angles33 · 22.9 · 38.2°Approach, breakover, departure
Clearance11.4 in9.8 to 11.4 in by trim
Highway mpg18EPA

Trims

2 we have figures for
TrimTireTransmissionAxleAnglesClearanceOpen
OCTA, 6D Dynamics air, standard height, 275/60R20 AT275/60R20—33 · 22.9 · 38.29.8 inUse →
OCTA, 6D Dynamics air, off-road height, 275/60R20 AT275/60R20—40.2 · 29 · 42.811.4 inUse →

Size

Wheelbase
119 in
Front overhang
33.5 in
Rear overhang
44.5 in
Height
78 in
Body
SUV
Stock tires
275/60R20

Transmissions and low range

Low range, l663_2spd
2.93:1

Axles

Front
Open front diff, independent
Rear
Active Locking Rear Differential, IRS

Brakes

Front rotor
15.75 in, 400 mm

Suspension

Front
double wishbone IFS, air springs, 6D Dynamics
Rear
independent, air springs with hydraulically interlinked 6D Dynamics dampers
Rear layout
Independent

Fuel economy

EPA highway
18 mpg
Rated years
2025–2026, 4WD

Every calculator, set up for the Defender OCTA

Tire sizeBigger tires: speedo, clearance, angles and brakes.Compare tiresRegearHighway RPM on every ratio and mpg.Pick your gearsCrawl ratioHow slow it creeps, against other trucks.Work out crawlSpeedometerWhat it really reads on new tires.Fix your speedoLinksAnti-squat and what a lift does to it.Check your linksYour rigBuild sheet and measured angles.Start a build sheetLeaderboardsWhere the Defender OCTA ranks against every stock truck.See where it ranks

Source: landrover.co.uk.

Use at your own risk. These calculators are here to help you plan and to inform your decisions, not to sign off on a build. Many numbers are estimates worked out from factory figures, and some factory figures are not yet confirmed. Check every number against your own truck, its manuals and a qualified shop before you buy parts, cut, weld, lift, regear or drive on it. Long Range Desert Tools is not liable for anything you do based on these calculators or their results. The full terms are in our policies.